Process of making chlorids of carbon.



PATEN-T ED DEC. 26, 1905.

F. J. MAGHALSKB. I PROCESS OF MAKING CHLORIDS OF CARBON.

APPLICATION, FILED JUNE 1.1905.

IIUNIITIED PATIENT @FIUE; FLORENTINE J. MAOHALSKEITOEBROOKLYN, NEW YORK, ATSSIGNOR T FREDERICK DARLINGTONJOF GREAT BARRINGTON, MASSAOHUSETTS.'

aooess os' reasons, CHLORRDSJQF CARBON.

' Patented Dec. 26,1905.

Applicatiopfil'd Mei, 1905. SerialNo.263,287.

To aZZ whom tummy concern.- V Be it known that I, FLORENTINE J. MAGH ALsKE, a citizen of the United States, residing at Brooklyn, county of Kings, State of New York, have invented 'certam new and useful Improvements in Process of Making Chlorids of Carbon, of which the following is a full, clear, and exact description.

. accomplishing this result.

. My invention relates to a process of makmg chlorids of carbon, and has for its object to providea simple and efiicient method for According to this process by the application of heat to a suitable mixture oxychloride of carbon (chloro-carbonicacid) or its corresponding (CCIO CCI are st formed, from which by a v subsequent treatment chloride of carbon and carbonic anhydrid are obtained. The oxychlorids of carbon are obtained b making an admixture of calcium oxid, calcluni chlorid,

and carbon, there being two parts of calcium oxid, two parts of calcium chlorid, and ten arts of carbon, the carbon being preferably in the form of brolien coke. This mixture is heated, theheat being preferably effected in an electric furnace in which a non-oxidizing atmosphere is maintained. The resulting products are four parts of calcium carbid and two parts of oxychlorid of carbon. The charge should be free from water and the products kept from contact with the air or with moisture. The reaction is represented by the following equation:

The heating is preferably eflected in an electric furnace of either the are or resistance type. An alternating currentis preferred of from one thousand amperes at fifty volts to composition into ,carbon tetrachlorid (C01 erchloro methylformate nately, as indicated. The towers are and carbon dioxid (CO in accordance with the following equation:

Both these products being in gaseous form are separated by passin t e same through a reflux condenser, where y the carbon tetrachlorid is converted into a liquid form, the remaining gas, carbon dioxid, is withdrawn by a compressor and llquefied thereby, or it may be used in gaseous form in chemical processes, as the case may be.

While it is preferable to use calcium chlorid, the-process can be carried out with other chloride. Thus,for instance, sodium or magnesium chlorid, &c., may be used. In case sodium chlorid is used the reaction may be represented by the following equation:

ZGaO 4NaCl 10C (2Ca O 2Na 'C 20001,.

In this case the oxychlorid of carbon (COQI passes ofi as a gas and is treated as above described.

A suitable apparatus for carrying out this process is shown in the annexed diagrammatic drawing. It is obvious, however, thatthe carrying out of the process is not limited to the use of this particular a paratus, but

that the apparatus can be mo lfied in vari-- 'ous ways.

Referring more particularly to the draw-z ings, A re resents anelectric furnace of the ordinary orm connected, preferably, with an alternating-current generator B.

C is the hop or for receiving the charge, and D is the exit for gases which result from the operation. The passage leading from the exit 1s provided with a dust-collector E and opens into a system of towers F of as many units as may be desired, connected altervided with taps f and hand-holesf an are filled with coke, bone-black, or pumice G,

throu h which the oxychlorids of carbon are asse and by which they are decomposed into carbon tetrachlorid and carbon diom'd. The carbon tetrachlorid and carbon dioxid in gaseous form are passed through the worm H of a water-cooled condenser, the result being that the carbon tetrachlorid is converted into liquid form, flowing into the receiver 1. The remaining gas, carbon dioxid, is drawn from the worm by the compressor J and, if desired, liquefied thereby, so as to be received by the retort K. The residuum in the furnace is removed in any suitable manner.

The furnace when in operation is sealed, the opening through the hopper being closed by the products of combustion or b a plug C, so as to prevent the entrance of air and to maintain a non-oxidizing atmosphere.

What I claim is 1. The process of producing a chlorid of carbon, which consists in subjecting a mixture of oxids, chl'orids and carbon to heat and thereby forming oxychlorids of carbon, and subsequently decomposing said oxychlorids of carbon so as to obtain a chlorid of carbon, as set forth.

2. The process of producing a chlorid of I carbon, which consists in producing a mixture of an oxid of an alkaline earth and a chlorid and carbon and subjecting the same to heat of a high temperature so as to produce oxychlorids of carbon and subsequently decomposing said oxychlorids of carbon into carbon tetrachlorid and carbon dioxid, as set forth.

3. The process of producing a chlorid of 'carbon, which consists in subjecting a charge of calcium oxid, calcium chlorid and carbon to heat suflicient to produce oxychlorids of carbon, and subsequently decomposing said oxychlorids of carbon into carbon tetrachlorid and carbon dioxid, as set forth.

4. The rocess of producing carbon tetrachlorid, wlii of calcium oxid, calcium chlorid and carbon adapted to react and form oxychlorids of carbon and subjecting the admixture toheat of an electric furnace suflicient to eflect such reaction and subsequently decomposing the oxychlorids of carbon into carbon tetrachlorid and carbon dioxid, as set forth.

5. The process of producing carbon tetrachlorid, which consists in forming a mixture of calcium oxid, calcium chlorid and carbonadapted to react and form oxychlorids of carbon and subjecting the admixture to heat sufficient to efiect such reaction and subsef quently decomposing the oxychlorids of carbon into carbon tetrachlorid and carbon dioxid and condensing said carbon tetrachlorid, as set forth.

FLORENTINE J. MAOHALSKE.

Witnesses H. B. BROWNELL, L. VREELAND.

ch consists in forming a mixture 

